The model and business owner, 28, has allegedly fought with Ky in the past about her involvement with Chy and T's four-year-old son, King Cairo — which is why we bet she was NOT happy to see her latest Snapchat update.

(Photo Credit: Snapchat)

The above photo features a gingerbread house (gifted by Kylie's momager, Kris Jenner, 61) with the names of the makeup mogul and Tyga, but also includes little King's!

Fortunately, however, the Kardashian-Jenner matriarch gave a similar gift to Chyna and her fiance, Rob Kardashian, 29 — and didn't forget about the boy.